Wuhan has been placed under lockdown.
Authorities have suspended planes and trains in and out of the Chinese city - which has a population of 11 million people - as well as all public transport within Wuhan.
In an interview with the People's Daily, the Wuhan Health Commission said there are long queues at fever treatment centres, as well as a "tight situation" in terms of beds available.
The sharp rise in illnesses comes as millions of Chinese travel for the Lunar New Year, one of the world's largest annual migrations of people. With some 3 billion trips expected to be made over this year's holiday, there were concerns of the disease spreading further.
Ten days later, China confirmed that the coronavirus was the cause. At least 17 people had died by Wednesday - all in Hubei province, where Wuhan is located - and the number of infections had spiked to 571 on the Chinese mainland, with cases in dozens of provinces, including major cities. Fifteen were over 60, and most had underlying health issues.
The Ministry also advised against unnecessary travel to avoid cities where the virus is present in China, and to avoid close contact with animals in the affected areas and not to mix closely with people who show symptoms of respiratory infections, while continuing to wash hands with soap and water. The authorities in Wuhan, therefore, have demanded that all residents in Wuhan wear masks in public places. Those without masks are being barred from public premises, and violators should be reported to the relevant authorities.
The unidentified patient, who is in his 30s and lives alone in Snohomish County, was determined to have close contact with 16 people during his five days back in the USA before he received a diagnosis Monday for the contagious virus, public health officials said Wednesday.
Cases of the flu-like virus have been confirmed in Thailand, Taiwan, South Korea, Singapore, Japan and the United States. The infected person, a 52-year-old woman, was a traveller from Wuhan.
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He brought the complaint to the Philadelphia police a month later, and authorities opened an investigation. Police said the incident occurred in November and that the investigation was "active and ongoing".
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The aim of this research is to examine the eating habits of walking sharks closely. Sharks as a group have actually been around for about 400 million years.
"The decision about whether or not to declare a public health emergency of worldwide concern is one I take extremely seriously, and one I'm only prepared to make with appropriate consideration of all of the evidence".
In separate developments, three research teams are to start work on developing potential vaccines against the new coronavirus, a global coalition set up to fight diseases said on Thursday.
The news comes as the World Health Organization was meeting in Geneva Wednesday to determine whether the virus, which causes respiratory illness like pneumonia, is an worldwide health emergency.
Health authorities in Wuhan first casualty.
The World Health Organization (WHO) said Thursday that trying to contain a city the size of Wuhan is "new to science".
"Results derived from our evolutionary analysis suggest for the first time that snake is the most probable wildlife animal reservoir for the 2019-nCoV", wrote the study's authors, hailing from Peking University, Guangxi University of Chinese Medicine, Ningbo University and the Wuhan University of Bioengineering.
Officials have not said what steps are being taken at Vancouver-area hospitals, and Vancouver Coastal Health Authority deferred all questions to the B.C. Centre for Disease Control and the Public Health Agency of Canada.
"We have not seen any evidence of onward transmission such as 3rd, 4th generation transmission", she said.